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QOC Single Leadscrew :
ClampTecŪ Single Leadscrew Closures


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The LTS ClampTecŪ Single Leadscrew Closure offers an "all Metal" Fire safe Gasket design as standard. Both horizontal and vertical Closure options are available meeting ASME VIII Div.1 and Div.2 requirements as applicable. The clamp segments are supported between two plates and operated by turning the Leadscrew. The Door is hinged to allow easy access to the Barrel, and the Gasket is retained in the Door as a standard feature. The ClampTecŪ Single Leadscrew Closure is typically offered manual operated or supplied actuated using air, hydraulics or electric operators.


  1. Base design is Intelligent Pigging expandable

  2. 3D CAD modeling of structure and components with integrated FEA design and stress analysis

  3. All ClampTecŪ Closures utilize proven Fire safe "All Metal" Sealing Technology

  4. Closures offer standard "Bolt On" feature to Barrel for ease of repair and isolation

  5. Safety Shroud and Pressure Interlock Bleed System with DB&B option


  • Codes: ASME VIII Div. 1, Div. 2, Div. 3, API 6A, API 6H and PED

  • Ratings: ASME 1500lbs, 2500lbs and 4500lbs, API 6A 5M, 10M, 15M and 20M. Temperature range from -50°F (-46°C) to 500°F (260°C)

  • Sizes: 4" (100mm) through 60" (1500mm)

  • Materials: CS c/w Cladding, Alloy, SS and Chrome/Nickel Alloys

  • Options: Third Party Design Verification as required


Systems offered meeting NACE MR-0175 latest edition as required